John Calvin on Jeremiah 42:21

He at length adds, And I have this day declared it to you Here he sets forth his own fidelity, not for the sake of boasting, but that their impiety might be reproved, who at length despised the oracle of God, which they had boasted that they would obey. Ye have not hearkened, he says, to the voice of Jehovah your God, and according to all the things on account of which he hath sent me to you. The Prophet again confirms the truth, that it was their own fault that the Jews did not follow what was right, and also what was for their good, for he had faithfully delivered to them what God had commanded. He now adds, —

Jeremiah 42:22

22. Now therefore know certainly that ye shall die by the sword, by the famine, and by the pestilence, in the place whither ye desire to go and to sojourn.

22. Et nunc sciendo scitote (hic תדעו imperative sumendum est sine controversia) quod gladio et fame et peste moriemini in loco ad quem appetitis ire, ad peregrinandum illic.